In his workshop in Glasgow Peter Chang makes spectacular jewellery, like the bracelet made from a mix of bought acrylics and old beads, map pinheads and part of a broken shop-sign, which was acquired by the museum in 2004. Large but light, comfortable to wear but robust, the bracelet is like a sculpture that you can put your hand through. Dazzling in its saturated colour, it reminiscent of exotic plants and creatures from the sea or science fiction.

The bracelet invites curiosity. How was it made? After sketching a design, Chang started with a polystyrene base that he carved into shape. He then painstakingly covered the surface using mosaic and lacquer techniques, faceting and tweezering tiny pieces of coloured acrylic into position:

[I] build up layers of resin, painting it on - a bit like runny honey. Last are the inlaid, inset shapes. Some glitter! I use hand planes, rasps, needle files, and finish it off with wet and dry sandpaper, from coarse carborundum and progressively finer, ending with a linen polishing mop and wax. I do use lathes and power tools for piercing, and a thing like a dentist's drill. I also do thermo-forming, heated in the oven.

Making the bracelet was malodorous and dangerous work given the amount of fumes and dust, and use of solvents and adhesives. Chang worked on the bracelet on and off for just under a year. He calculates it took about 246 hours, excluding the time spent drawing and thinking about it. This patience, technical skill and dedication to detail is unusual for someone working with plastic, a material often considered worthless. Chang's work exemplifies how a person can bring preciousness to a material:

Diamonds, marble, gold, canvas and paint, as materials, are nothing in themselves until their creative potential is explored, exposed and fused through vision, intellect, instinct and the hands of artists, sculptors and craftsmen. The same is true of plastic. It is the joy of exploring their qualities of malleability, creating colour and sensuality, teasing the materials to obey, exploiting all to the maximum, which gives it value to me.

Peter Chang has been working with plastic for over 20 years. The son of a British mother and Chinese father, he grew up in Liverpool, England, where he trained as a graphic designer and sculptor. He worked for many years on sculptural projects, interiors and furniture designs before turning to jewellery in the 1970s, a period of experimentation and risk taking in jewellery making. His age (Chang is currently 60) and background point to the influence of the Pop art movement in Britain during the 1960s that saw conventional good taste replaced with vivid imagery and bright colour. In keeping with much postmodernist craft, Chang's work promotes a decorative, sensory and humorous role of objects through an exaggerated use of colour, pattern and form.

Chang says his attraction to plastic was partly fuelled by its throwaway quality as it gave him the freedom to take risks. He also liked plastic's anonymity or lack of character. Besides, he wanted 'something that would reflect the age we live in'.

The bracelet is a fitting addition to the museum's collection of plastics, begun in the 1940s with the acquisition of specimens of plastic mouldings used in the manufacture of munition supplies. Keeping abreast of the development of plastic became a preoccupation of Sydney's Technological Museum, which boasted Australia's first plastics industry exhibition. Organised by Arthur Penfold, the exhibition opened in the 1940s and aimed to cater for widespread community interest in 'one of the great technical wonders of the world, viz plastics'. Penfold, industrialist turned museum curator, fervently believed in the future of plastics and its role in Australia's postwar reconstruction. In 1945 he travelled to Britain, USA and Canada on an eight-month study tour to advise the government of the establishment of plastic factories in New South Wales. On his return Penfold was in great demand as a lecturer on the uses of plastic. Interviewed by the local press, he claimed that with the 'help of organic chemistry there will be nothing we won't be able to do paper as strong wet or dry; plastic insulation for cables; film for wrapping packages '

above written for the Museum's publication to celebrate its 125 anniversary

The bracelet was designed and made by Peter Chang in Glasgow, Scotland in 2004. See below extracts of interview of Louise Mitchell, curator, with Peter Chang about process of making the piece Glasgow workshop:

LM: How many hours did the bracelet take to make? What other projects were you working on during the period it took to make the bracelet?

PC: When I work on an object, the time involved in the making becomes irrelevant, it is rare for me to concentrate on the actual making for as much as eight hours at a time, as the object develops, time in thought and time for reflection is required, as is time for re-drawing and in some cases re-making. Going from 2D to 3D poses their own different challenges, unlike the designer/maker, who finishes an object, exactly, according to the 2D design, for me the preliminary drawing is the point of departure.

The bracelet took approximately 246 hours, excluding time spent in drawing and contemplation, spread over a period of 10 months. I worked on another commission over that period in tandem.

LM: Is working with plastic dangerous? Smelly?

PC: Yes to both, it's not only the material itself with its fumes and dust but also the solvents and adhesives.

"The Powerhouse bracelet core was made of carved polyurethane foam (bought), the surface was made of mainly pigmented polyester (bought) with inlays of red acrylic (bought) dots turned on a lathe with green polyester ( cracked-ice patterned) mosaic shapes, fluorescent green acrylic sheet (bought) was laminated and also turned on a lathe and hand finished. The inner band was made of strips of purple and red acrylic (bought) heat formed and periodically interrupted with discs of green. The 4 tentacles were fabricated from alternative laminations of polyester and acrylic sheet, yellow, orange and 2 reds were bought, 2 reds were re-cycled toped by a silver ball (bought). The 4 finials---- 1- hand-carved in green and pink fluorescent acrylic, 2- thermoformed hemisphere in acrylic (bought) with lathe turned acrylic appendages topped with shaped silver wire (bought), 3- thermoformed, laminated and carved acrylic (re-cycled from the centre of a discarded "o" from a sign-maker) red shape, surrounded by alternating green acrylic (supplied in an early sponsorship commission) shapes topped by silver wire, 4- base in thermoformed acrylic (bought) surmounted by a single bead (bought as part of a cheap, new necklace) further surrounded by dress-maker pin-heads (bought)"

Doughnut-shaped plastic bracelet. The inside is decorated in pink and purple stripes overlaid with some scattered spots. The outside is green with spots in yellows and pinks, some raised. Projecting tentacles have been applied to the outside; some are striped, conical, wavy finials, others are multi armed forms, in bright colours and silver.

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